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On top of that, Umbreon VMAX has been a very playable card since its release in Evolving Skies, although I think its unlikely you will see too many of this version in peoples decks

With Righteous Valkyrie out, you can play this to get five life straight away, and then another four on your end step when the Harbinger makes an Angel token

Snatch Arm is an item card that grants you the ability to view your opponent's hand and select a Pokmon from it to shuffle to the bottom of their deck

It also includes some handy additional tools, such as the ability to track the changing value of your collection, or using public decks as a template